{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9715004","patent":{"patent_number":"US-9715004","title":"Radio positioning of a mobile receiver using a virtual positioning reference","assignee":null,"inventors":[],"filing_date":"2015-12-29T00:00:00.000Z","publication_date":"2017-07-25T00:00:00.000Z","cpc_codes":["G01S","G01C","G01S","G01S","G05D","G05D"],"num_claims":17,"abstract":"Methods and systems are disclosed for radio positioning of a vehicle using a virtual positioning reference established by logging a known position of the vehicle together with a local time that a first instance of a predictably repeated code word is received from an opportunistic terrestrial radio transmitter. During movement of the vehicle to a second, unknown position, a local clock is used to determine the time difference between when the virtual positioning reference is predicted to receive a second instance of the code word and when the vehicle actually receives the second instance of the code word, thereby providing positioning information when traditional navigation signals such as GPS are not available. The radio positioning information is then used to initiate an action such as recording the location information for future retrieval by a user, and/or controlling the movements of an autonomous vehicle."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Radio positioning of a mobile receiver using a virtual positioning reference","description":"Methods and systems are disclosed for radio positioning of a vehicle using a virtual positioning reference established by logging a known position of the vehicle together with a local time that a firs","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9715004","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9715004","citation_suggestion":"Patentable. \"Radio positioning of a mobile receiver using a virtual positioning reference\" (US-9715004). https://patentable.app/patents/US-9715004","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9715004","json":"https://patentable.app/api/llm-context/US-9715004","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:18:03.308Z"}